81827840

素因数分解:

$2^{11}\times 5^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:219

約数の個数: 96

約数和(自身を含む): 201080880

約数和(自身を除く): 119253040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 131, 160, 244, 256, 262, 305, 320, 488, 512, 524, 610, 640, 655, 976, 1024, 1048, 1220, 1280, 1310, 1952, 2048, 2096, 2440, 2560, 2620, 3904, 4192, 4880, 5120, 5240, 7808, 7991, 8384, 9760, 10240, 10480, 15616, 15982, 16768, 19520, 20960, 31232, 31964, 33536, 39040, 39955, 41920, 62464, 63928, 67072, 78080, 79910, 83840, 124928, 127856, 134144, 156160, 159820, 167680, 255712, 268288, 312320, 319640, 335360, 511424, 624640, 639280, 670720, 1022848, 1278560, 1341440, 2045696, 2557120, 4091392, 5114240, 8182784, 10228480, 16365568, 20456960, 40913920, 81827840]

約数ペア:

[(1, 81827840), (2, 40913920), (4, 20456960), (5, 16365568), (8, 10228480), (10, 8182784), (16, 5114240), (20, 4091392), (32, 2557120), (40, 2045696), (61, 1341440), (64, 1278560), (80, 1022848), (122, 670720), (128, 639280), (131, 624640), (160, 511424), (244, 335360), (256, 319640), (262, 312320), (305, 268288), (320, 255712), (488, 167680), (512, 159820), (524, 156160), (610, 134144), (640, 127856), (655, 124928), (976, 83840), (1024, 79910), (1048, 78080), (1220, 67072), (1280, 63928), (1310, 62464), (1952, 41920), (2048, 39955), (2096, 39040), (2440, 33536), (2560, 31964), (2620, 31232), (3904, 20960), (4192, 19520), (4880, 16768), (5120, 15982), (5240, 15616), (7808, 10480), (7991, 10240), (8384, 9760)]